Made of a skin-friendly, itch-free blend of merino wool, nylon, and polyester, these lightweight crew socks provide exceptional breathability, a cooling airflow and rugged durability. They have excellent stretch and recovery that lasts the lifetime of the sock, and soft terry-loop footbeds that provide airy cushioning for your feet. A mesh-arch brace provides a snug fit. The looped Lintoe construction creates the smallest and flattest seam possible for maximum toe comfort. Calf height.